Wheat response to a soil previously irrigated with saline water

摘要

The worldwide concern for the insufficient freshwater resources induces to explore solutions for the sustainable use of non-conventional waters in agriculture; the present research was aimed at assessing wheat response, in terms biomass production, chemical composition and of sucrose accumulation as well as of SPS (sucrose phosphate synthase) and SS (sucrose synthase) activation, to a variously saline substrate. Sucrose accumulation in fact is acknowledged as a plant feedback response in terms of osmoregulation and crioprotection (Wang et al., 2000), regulating plant photosynthesis and development (Paul and Pellny, 2003), while SPS and SS are the enzymes regulating its biosynthesis. In detail, SPS influences the glucids metabolism (Worrell et al, 1991) as demonstrated by the variations in the sucrose/starch ratio in leaves; SS (EC 2.4,1.13) is a revealer of the processes of sucrose demolition (Heim et al., 1993).